... video output> All channel synchronous realtime playback, GRID interface & smart search> 3D intelligent positioning with Dahua PTZ dome camera ... 16Privacy Masking4 rectangular zones (each camera)OSDCamera title, Time, Video loss, Camera lock, Motion detection, RecordingRecordingVideo ... , MD Zones: 396(22×18), Video Loss & Camera BlankAlarm Input4 channel8 channel16 channelRelay Output6 channelPlayback ...